The title of this article is conjectural. Although it is based on canonical information, the actual name is conjecture and may be supplanted at any time by additional information released from canonical sources. If this occurs, please move this page to the appropriate title.

The children of Dudley Dursley and Mrs. Dursley were Muggles.[1] They would occasionally be visited by their magical cousins, the two sons and daughter of their father's cousin Harry Potter. While they played with James, Albus, and Lily, the children's fathers would sit silently together.[2] Their fathers, Dudley and Harry, were on "Christmas Card" terms. It is unknown if Dudley's children were male or female or if they were as fat or spoiled as Dudley was in his childhood.

It is unknown whether Dudley's children know about magic. Harry Potter might have advised his children not to discuss magic around these Muggles and, if Dudley is anything like his father, he probably would never have mentioned the incidents where Harry used magic at 4 Privet Drive. Though, this can not be said for sure.